ID-221 Oil Sheen Sensor for use with PS220/N4

ID-221 Oil sheen sensor

This sensor from Leakwise detects the presence thin layers of hydrocarbons on water, and monitor their build-up.  It is used for the early detection, warning and control of oil leaks and spills in wet sumps, tanks and groundwater monitoring wells.  It can also be used to detect and monitor hydrocarbons in oil/water separators, cooling water trenches, storm water run-offs, retention ponds, boiler condensate tanks and waste-water sewer systems. 


Detection Range

0.3 - 25 mm (0.01 - 1.0 in) of hydrocarbon on water or brine

Water level variation

Minimum: 30 cm (~12 in) above well/tank/sump bottom; Maximum: 45 m (~150 ft.).

Water lateral velocity

~20 cm/sec (~8 in/sec) when installed in a stilling well

Water temperature

0 - 70° C (32 - 158° F); no freezing

Air temperature

-10 - 80° C (14–176° F)


Hydrocarbon resistant polymers, 316 stainless steel;


Ø: 87 mm (3.4 in), height: 150 mm (5.9 in); fits into 96 mm (4.0 in) stilling well

Integral cable

10 m (~33 ft.) supplied with sensor, additional length to order up to 50 m (164 ft.) total


ATEX Intrinsically Safe: II1G Ex ia IIC T4 Ga -40° C to +70° C. Also: IECEx and CETLUS


Combined with PS220/N4, approved for operation in hazardous location.


EPA - Conforms to Spill Prevention, Control and Countermeasure (SPCC) - Oil Pollution
Prevention regulation (40 CFR part 112), and EPA/530/UST-90/009 - Leak Detection Methods
TÜV - Type approval in accordance with WHG (Water Resources Law) § 19 h


ISO 9001:2015 Certified


Stilling well

In 1 m and 2 m long sections, which can be assembled to any required length.

oil sheen sensor ID-221 from Leakwise